Lots of SzGui work

SzGui/SzApp.cs

@@ -2,29 +2,51 @@ using System.Numerics;
 using ImGuiNET;
 using Raylib_cs;
 using rlImGui_cs;
+using SzGui.Windows;
 
 namespace SzGui;
 
 public class SzApp
 {
+    public static readonly SzApp AppInstance = new();
+    private SzApp() { }
+    
+    private List<SzGuiWindowBase> _activeWindows = new();
+
+    public void ActivateWindow(SzGuiWindowBase window)
+    {
+        if (_activeWindows.Any(w => w.GetType() == window.GetType()))
+        {
+            ImGui.SetWindowFocus(window.WindowName);
+            return;
+        }
+    
+        _activeWindows.Add(window);
+    }
+    
     public void Init()
     {
+        ApplicationSettings.LoadSettings();
+        
         Raylib.SetConfigFlags(ConfigFlags.Msaa4xHint | ConfigFlags.VSyncHint | ConfigFlags.ResizableWindow);        
         Raylib.InitWindow(1280, 800, "SessionZero");
         
         rlImGui.Setup(true, true);
         ImGui.GetIO().ConfigWindowsMoveFromTitleBarOnly = true;
-
+        
+        if (ApplicationSettings.GetSettingValue<bool>("ShowStartup")) ActivateWindow(new StartupWindow());
+        
         while (!Raylib.WindowShouldClose())
         {
             Raylib.BeginDrawing();
-            Raylib.ClearBackground(new Color(0, 20, 50));
+            Raylib.ClearBackground(Color.Gray);
             rlImGui.Begin();
 
+            ImGui.PushStyleColor(ImGuiCol.WindowBg, new Vector4(0, 0, 0, 0));
             ImGui.DockSpaceOverViewport(0);
-
-            // ImGui.ShowDemoWindow();
-            ImGui.ShowStyleEditor();
+            ImGui.PopStyleColor();
+            
+            HandleShortcuts();
             DrawImGui();
             
             rlImGui.End();
@@ -34,13 +56,72 @@ public class SzApp
         rlImGui.Shutdown();
         Raylib.CloseWindow();
     }
+    
+    private void HandleShortcuts()
+    {
+        var io = ImGui.GetIO();
+        
+        if (io is { KeyCtrl: true, KeyAlt: true } && ImGui.IsKeyPressed(ImGuiKey.S))
+        {
+            ActivateWindow(new SettingsWindow());
+        }
+
+        if (io is { KeyCtrl: true, KeyAlt: true } && ImGui.IsKeyPressed(ImGuiKey.Q))
+        {
+            Raylib.CloseWindow();
+        }
+    }
+    
+    private void UpdateImGuiTheme()
+    {
+        var c = ApplicationSettings.GetSettingValue<Color>("BackgroundColor");
+        Vector4 styleColor = new Vector4(c.R / 255f, c.G / 255f, c.B / 255f, 1.0f);
+        ImGui.GetStyle().Colors[(int)ImGuiCol.WindowBg] = styleColor;
+    }
 
     private void DrawImGui()
     {
-        if(ImGui.Begin("SessionZero"))
+        DrawGlobalMenuBar();
+        
+        for (int i = _activeWindows.Count - 1; i >= 0; i--)
         {
-            ImGui.TextUnformatted("Test: " + IconFonts.FontAwesome6.House);
+            _activeWindows[i].Draw();
+            if (!_activeWindows[i].IsOpen) _activeWindows.RemoveAt(i);
         }
-        ImGui.End();
     }
+
+    private void DrawGlobalMenuBar()
+    {
+        if (ImGui.BeginMainMenuBar())
+        {
+            if (ImGui.BeginMenu("File"))
+            {
+                if (ImGui.MenuItem("Exit", "Ctrl+Alt+Q")) Raylib.CloseWindow();
+                ImGui.EndMenu();
+            }
+
+            if (ImGui.BeginMenu("Edit"))
+            {
+                if (ImGui.MenuItem("Settings", "Ctrl+Alt+S")) 
+                {
+                    ActivateWindow(new SettingsWindow());
+                }
+                ImGui.EndMenu();
+            }
+
+            if (ImGui.BeginMenu("View"))
+            {
+                if (ImGui.MenuItem("Start window"))
+                {
+                    ActivateWindow(new StartupWindow());
+                }
+                ImGui.EndMenu();
+            }
+            
+            if (ImGui.MenuItem("Library")) ActivateWindow(new SzLibraryWindow());
+            
+            ImGui.EndMainMenuBar();
+        }
+    }
+    
 }